- share the processing resources of my desktop over the network so the Pi can use it for compilation
- synching (in background, fast, automatic) between the cross-compiled binaries on the desktop and the Pi

Any other solutions, ideas ?
If any of these are good and easy to implement, could you give me any hings on where to start ?

script on Pi that calls $DESKTOP to build package using cross compile. Script handles all the details via ssh using public key authentication, or something. Once emerge completes, the binary is stored to a shared partition (samba, nfs, or somthing) and same script then installs the package on $PI. That way you use Gentoo, but everything is abstracted.

I wouldn't say Arch is not particularly reliable. I just had an update kill my shadow files. Honestly, the problem was NOT between the keyboard and the chair with that one.

Some script hints to get you going. I would call it compile.sh, just because.

And there you go! A simple emerge with only 1 command and also only 1 or 2 entries of your password depending on how you configure ssh.

For updates, you can do something similar, but first you need to process the output of emerge -quND world on your deivice (replace [ebuild ....] with =)_________________First things first, but not necessarily in that order.

- share the processing resources of my desktop over the network so the Pi can use it for compilation
- synching (in background, fast, automatic) between the cross-compiled binaries on the desktop and the Pi